Test your skills of deduction with the March 2022 edition of Riddle Me This: Bridge Crossing

Alan, Bob, Cal, and Dan are all on one side of a narrow and danaerous bridge that they would like to cross. It is late at night and very dark so they cannot cross safely without a flashlight. They have only one flashlight and the bridge is only strong enough to support the weight of two people at once. Each of the four people walk at different speeds:

  • Alan can cross the bridge in one minute
  • Bob can cross in two minutes
  • Cal can cross in five minutes
  • Dan can cross in ten minutes
  • When two people are walking together sharing the flashlight they walk at the slower person’s pace

How quickly can Alan, Bob, Cal, and Dan all get across the bridge safely?

Click to Reveal Answer